Trico 30052 Opto-Matic Constant Level Oiler Plastic

The Trico 30052 Opto-Matic Constant Level Oiler (Style E) is an industrial lubrication device that automatically maintains a constant oil level in bearing housings and oil sumps, delivering reliable, maintenance-friendly lubrication for rotating equipment such as pumps, gearboxes, electric motors, compressors, fans, and other oil-sump applications. It features a 2 oz (59 mL) reservoir made from transparent butyrate plastic to visually confirm oil level, paired with a rugged zinc die-cast body and a 1/4 in NPT outlet; mounting is direct with side or bottom connections, and the unit is rated for continuous operation up to 165°F (74°C). This oiling solution is widely used in industrial facilities including manufacturing plants, chemical processing, mining, pulp and paper, power generation, and oil and gas operations to help minimize bearing wear, reduce downtime, and extend service life by maintaining a steady lubricant level in sumps and bearing housings. Common replacements in the Opto-Matic family include Trico 30054, 30058, and 30203 (Closed System Constant Level Oiler). The combination of a compact reservoir, sight-friendly materials, and simple direct-mount installation makes the 30052 a practical option for ongoing lubrication system maintenance.